2015- up to day: Head of Department of Informative and Operating Systems and Technologies of Uzhhorod National University;

2014-2015: Acting Head of Department of Informative and Operating Systems and Technologies of Uzhhorod National University;

Previous position, institution, starting day:

2005-2013: associated professor of Department of Cybernetic and Applied Mathematics of Uzhhorod National University;

2002-2004: assistant professor of Department of Cybernetic and Applied Mathematics of Uzhhorod National University;

1999-2002: a post-graduate student, Department of Cybernetic and Applied Mathematics of Uzhhorod National University;

1999-2013: a lecturer  of course -  fundamentals of programming and algorithmic  languages , Uzhhorod State Institute of Computer Sciences, Economics and Law,

1998-1999, an engineer-programmer, Uzhhorod State Institute of Computer Sciences, Economics and Law ;

1994-1995, a programmer, Transcarpathian commercial Bank “Lisbank”, Uzhhorod